<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <!-- 使用了clearable清空就会有一个clear事件 -->
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <!-- 作用域插槽获取表格数据给其子元素,一个时简写 -->
        <el-table-column label="状态" v-slot="{row}">
          <el-switch v-model="row.mg_state" @change="userStateChanged(row)"></el-switch>
        </el-table-column>
        <el-table-column label="操作" v-slot="{row}" width="180px">
          <!-- 修改、删除、分配角色按钮 enterable:离开后是否还保存状态-->
          <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(row.id)">
          </el-button>
          <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(row.id)"></el-button>
          <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
            <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(row)"></el-button>
          </el-tooltip>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <!-- 分页事件、页码事件、当前页、分页数组(每页多少条)、每页数据、展示哪些项、总数据 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </el-card>
    <!-- 添加用户的弹出对话框 关闭dialog弹出框会触发一个close事件-->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!-- 添加用户内容区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色对话框 -->
    <el-dialog title="提示" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data () {
    // 自定义验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        return cb()
      }
      cb(new Error('请输入合法的邮箱'))
    }
    // 自定义验证手机号的规则
    var checkMobile = (rule, value, cb) => {
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return cb()
      }
      cb(new Error('请输入合法手机号'))
    }
    return {
      // 获取用户列表的参数对象(定义一下更清晰)
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 2
      },
      userlist: [],
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加用户表单验证规则
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '用户名长度3到10位', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入电话号码', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息
      editForm: {},
      // 修改用户表单验证规则
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入电话号码', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 当前分配权限用户的信息
      userInfo: {},
      // 所有角色数据列表
      rolesList: [],
      // 已选中分配的角色id值
      selectedRoleId: ''
    }
  },
  methods: {
    async getUserList () {
      const { data: res } = await this.axios.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$message.error('获取用户列表失败!')
      this.userlist = res.data.users
      this.total = res.data.total
      console.log(res)
    },
    // 监听pagesize分页改变
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码值改变
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听switch开关状态的改变,修改后提交到数据库
    async userStateChanged (userinfo) {
      const { data: res } = await this.axios.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200) {
        // 更新失败就返回原状态
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新状态失败!')
      }
      this.$message.success('更新状态成功!')
    },
    // 监听添加用户对话框关闭事件(.resetFields()对表单进行重置)
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 添加新用户
    addUser () {
      this.$refs.addFormRef.validate(async valid => {
        // 失败直接返回
        if (!valid) return
        // 发起网络请求向数据库添加用户
        const { data: res } = await this.axios.post('users', this.addForm)
        if (res.meta.status !== 201) return this.$message.error('添加用户失败！')
        this.$message.success('添加用户成功！')
        // 隐藏对话框
        this.addDialogVisible = false
        // 重新获取用户数据
        this.getUserList()
      })
    },
    // 编辑用户对话框
    async showEditDialog (id) {
      this.editDialogVisible = true
      const { data: res } = await this.axios.get(`users/${id}`)
      if (res.meta.status !== 200) return this.$message.error('查询用户信息失败！')
      this.editForm = res.data
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.axios.put('users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status !== 200) return this.$message.error('更新用户信息失败！')
        // 关闭对话框、刷新用户列表、提示更新成功
        this.editDialogVisible = false
        this.getUserList()
        this.$message.success('更新用户信息成功！')
      })
    },
    // 根据ID删除对应用户信息
    async removeUserById (id) {
      // 弹框询问是否删除
      const confirmResult = await this.$confirm('此操作将永久删除该用户,是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除!')
      }
      const { data: res } = await this.axios.delete('users/' + id)
      if (res.meta.status !== 200) return this.$message.error('删除用户失败！')
      this.$message.success('删除用户成功！')
      this.getUserList()
    },
    // 展示分配角色对话框
    async setRole (userInfo) {
      this.userInfo = userInfo
      // 展开对话框之前获取所有角色列表,方便后面选择
      const { data: res } = await this.axios.get('roles')
      if (res.meta.status !== 200) return this.$message.error('获取角色列表失败!')
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    async saveRoleInfo () {
      if (!this.selectedRoleId) return this.$message.error('请选择你要分配的角色!')
      const { data: res } = await this.axios.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
      if (res.meta.status !== 200) return this.$message.error('更新角色失败！')
      this.$message.success('更新角色成功!')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框关闭事件
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userIfo = {}
    }
  },
  created () {
    this.getUserList()
  },
  components: {}
}
</script>

<style lang="scss" scoped>
</style>
